a friend of yours suggests that at least 10% ...
a friend of yours suggests that at least 10% of people at your university have had something stolen from them on campus in the past year. this is your population value. you take a random sample of 100 people in you classes to determine if your friend is correct. you think that they may be wrong. you find that 15% of them have had something stolen. would you have a one or two tailed test?
Answer
# Brief Explanations:
The friend claims at least 10% have had something stolen. We are only interested in whether the proportion is less than this value (to prove the friend wrong). So we are only concerned with one - sided deviation.
# Answer:
One - tailed test